According to the United States Census Bureau, the city has a total area of 31.7 square miles, of which 28.6 square miles is land and 3.0 square miles, or 9.54%, is water. It is about 12 miles west of the Oklahoma-Arkansas border.
Various demographics are located on City Data or on the US Census website.
Below are a few demographic reports:
Profile of General Population and Housing Characteristics: 2010
American Community Service DEMOGRAPHIC AND HOUSING ESTIMATES